UNDERWATER ACID WASH SET
Product Overview
Draining a plaster pool to strip localized stains risks popping the shell; this tool delivers targeted acid directly underwater without draining.
What pool techs reach for when dealing with stubborn mineral or metal stains without the expense and hazard of draining, the Purity Pool UAW Underwater Acid Wash Set applies muriatic acid directly to localized surface blemishes. The kit features a 25 ft Quick Siphon Tube alongside both 4-inch and 14-inch interchangeable heads for spot-treating steps or sweeping across wide plaster patches.
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Benefits & What Makes It Different
Dual 4-Inch & 14-Inch Heads
Switch between the precision 4-inch head for tight corners and steps or the wide 14-inch head for treating broad floor stains efficiently.
25 ft Quick Siphon Tube
Enables safe, continuous acid delivery directly from an acid container on the deck straight to the pool floor without splashing.
No Pool Draining Required
Eliminates hydrostatic pop-up risks, expensive water refill bills, and major downtime by dissolving plaster scale while the pool stays full.
Compatibility
- Compatible with standard 1.25-inch pool pole connections
- Designed for use with standard 1-gallon muriatic acid bottles
- Safe for white plaster, quartz, and pebble pool surfaces
- Not compatible with vinyl liner, painted, or fiberglass finishes
When To Use This
Pro Tip
In hard water regions where calcium hardness frequently exceeds 400 ppm, keep a scoop of sodium bicarbonate on hand to broadcast directly over treated areas after each pass to quickly neutralize localized low pH pockets.
Common Questions & Instructions
How does the Purity Pool Underwater Acid Wash work without draining the pool?
The tool uses a 25 ft siphon tube connected to a standard jug of muriatic acid on the pool deck. As you guide the head across stained plaster, concentrated acid is applied right at the surface to lift stains before safely diluting into the main body of water.
Will using this underwater acid wash tool impact my water chemistry?
Yes, delivering acid underwater will consume total alkalinity and lower pH. Once stain treatment is complete, test your water and adjust with soda ash or sodium bicarbonate to maintain total alkalinity at 80–120 ppm and pH at 7.2–7.6.
Can I use the underwater acid wash set on vinyl or fiberglass pools?
No. This tool is designed strictly for white plaster, quartz, and exposed aggregate pebble surfaces. Direct contact with concentrated acid can blister fiberglass gelcoats and permanently bleach or degrade vinyl liners.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
